Typewriting machine



Fig. 1 and Patented June 29, 1926.

UNITED STATES JOSEPH B. HOLDEN,

1,590,511. PATENT OFFICE.

F SYRACUSE, NEW .YCRK, ASSIGNOR TO REMINGTON TYPE- WRITER COMPANY, OFILION, NEW YORK, A. CORPORATION OF NEW YORK.

rrrnwnrrms MACHINE.

Application filed September 8, 1923. Serial No. 661,618.

My invention relates to carriage feeding or escapement mechanism fortypewriting machines, and its object is to provide new and improvedmechanism of the character stated. More specifically, the object of myinvention is to improve in certain respects the escapement mechanism ofE. E. Barney disclosed and claimed in his application Sr. No. 659,116filed Aug. 2 1, 1923, my improvements resulting in increased accuracy ofoperation of the escapement mechanism.

To the above and other ends which willhereinafter appear, my inventionconsists in the features of construction, arrangements of parts, andcombinations of devices hereinafter described and particularly pointedout in the claims.

In the accompanying drawings which illustrate the preferred form of myinvention applied to a Smith Premier No. 60 typewriting machine,

Figure 1 is a fragmentary side elevation partly in section showing thetrain of connections between the key operated universal bar and theescapement dog rocker, together with associate parts.

Figure 2 is a fragmentary rear elevation showing some'of the parts ofFig. 1.

Figure 3 is a view corresponding to Fig. 1 but showing the parts inoperated positions.

Figure 1 is an enlarged detail view, and

,Figure is a side elevation partly in section showing the mounting ofthe spring for restoring the universal bar and oscillator.

The Smith Premier No. 60 typewriter employs a set of type bars arrangedin an arc of a circle and normally horizontally disposed below theplaten 1, with the front face whereof said type bars co-operate. One ofthe middle typebars of the set is shown in the present case, said typebar being numbered 2. The set of type bars are mounted on a commonarcuate pivot wire 3 which is supported on a vertically disposedsegmental type bar support 4 formed with radial slots, in each of whichone of the type'bars is arranged and guided. Rigid with the segmentproper is a supplemental or guide frame 5. the segment l and the frame 5being adapted to be shifted vertically on the main frame of the machineto change case. The lower case position of the seg ment at and frame 5is illustrated in full lines the upper case p esides. by

dotted lines, key operated devices not shown herein being employed toshift the segment a and the frame downward for upper case. At their freeends the type bars are supported on a rest 6 which is connected with theshiftable segment and frame and shifts downward with them, therelationship of the type bars on their support consequently remainingthe same in both shift positions. The heel of each type bar is connectedby a rearwardly extending link 8 with the upper end of a lever 9, theparts 8 and 9 being elements of the key operated train for ac tuatingthe type bar. Close to its pivot 3 each type bar is provided with acontact face 2 which is adapted to co-operate with the front edge of avertically disposed curved or arcuate universal bar 10 arranged in anarcuate groove indicated at 11 formed in the rear face of the type barsegment. Guide devices for the universal bar comprise apin 12 carried byan extension 13 from the universal bar and engaging in a guide opening14 in the segment. At its sides, the universal bar rearwardly extendingarms 15, each pivotally connected at 16 with the forked or bifurcatedupper end portion of a crank arm 17, said crank arms extending upwardfrom a rock shaft 18. The arms 15 fit loosely'be- 10 is provided withtween the bifurcations in the arms 17, each pivotal device or pin 16bridging the associate fork and passing loosely through the arm 15. Therock shaft 18 is pivoted at its ends on coned screw pivots 19 supportedby arms 20 secured to the frame member 5, check nuts 21 holding thescrew pivots in adjusted positions on said arms. Rising from one endportion of the rock shaft 18 is an arm 22 carrying at its upper end, a

lateral screw 23 to which is secured the rear end of a coiled spring24:. The front end portion of said spring is anchored to the part 5,preferably in the following manner, said spring has secured within it aflanged nut 25 which receives a long screw 26 that projects rearwardthrough an opening in the part 5 (Fig. 5). The head 27 of the screw 26is adapted to slide in a hole 28 in the segment, the rear end of saidhole being reduced so as to prevent passage therethrough of the head 2'(while affording free movement of the shank of the screw. Theconstruction is such that the tension of the spring 2 1 may reaaiiy bevaried by apply ing a tool. to the nick of the screw through the hole 28and turning the screw in or out to move the nut longitudinally thereofthus stretching or compressing the spring 24: as may be desired. It willbe understood that the universal bar frame 10, 15 and the oscillator orsupport 17, 18 participate in the case shifting movements of the typebars, the segment l and the member 5, as indicated by dotted lines inFig. 1.

Instead of connecting the push link or connector directly with rigid armon the rock shaft of the oscillator as in the appli cation of Barneyaforesaid I provide an improved form of connection which has theadvantage of affording fine adjustments a feature which has been foundhighly desirable in practice. In carrying out this part of my inventionthere is provided an arm 29 which is fixed to or formed integrally withthe rock shaft at about its middle and extends upward and rearwardtherefrom terminating in rearward horizontally disposed extensfon 29Pivotally supported on the rear end of this extensionas by aloose rivet30 is an angular plate 31 formed with a downward extension provided withan arcuate slot indicated at 33 and struck from he pivot 30 of the plate31 as a center. The forward end of the plate 31 carries a stud or headedpin34. The slot 33 receives a headed screw 35 which is threaded into theside of the arm 29, a washer 36 being interposed between the i ead ofthe screw 35 and the face of the plate 31. It willibe apparent that whenthe screw 35 is tightened, the plate 31 is held in fixed relationshipwith the arm 29 29, and that by loosening the screw the slate ma be swunu) or down on its pivot 30 thus varying the position of the stud or pinsash-e1- which the plate may be reclamped by the clamping means or screwThe adjustable stud 34; is engaged by the forked forward end of a linkor connector 37 which extends rearward and is also forked or bifurcatedat its rear end, the rear bifurcations cooperating with a circulargroove 38 formed in a stud 39 fixed to and projecting laterally from thelower end of an arm or member 10' loosely mounted on a horizontal rockshaft al extending transverse y of the machine. The ends of the reel:shaft are countersunk to accommoof set screws 48 mat secure the dogrocker to the rock shaft 11. It will he observed from Fig: 2 that therocker abuts the arm and that the stud 39 projects from said arm inwardunder the dog rocker; This gives a compact construction avoidinginterference with certain of the tabulating mechanismof the machine. Them mber or arm &0 has an extension 40 above the rock shaft 10,which'e'Xtension is thinner than the lower part of the arm and is formedwith a tapped hole which receives threaded memher or nut 49 having ahexagonal head 50 and abutting at its inner end against the rear face ofa lug that is integral with the rocker arm as, (F Passing loosely Thethrough a hole 51' in the nut 4.9 is a headed screw 52, the forwardeiidof whi'cli'is threadthe arm or member 1O, 40 in fixed relationship withthe router and prevents said arm shaft 4'1. 111g the screw 52 the nutmay be threaded d to the hexagonal Lead and thereafter screw 52 may betightened to force the inner end of the nut to abut tigl'itly aq alnstthe lug 45 The construction affords means for varying the angular positn of 11323111 or me vic rig improved means forva'rying oradf usting thelocation of the stud 39 with which forward end of the screw projectsthrough and beyond alug 15 and acts in c'o-operato limit the forwardmovement of the dog rocker; ba d rocker is maintained in its arestoringspring 7 54. Mounted on the rocker arm 15 and pro ecting aborethe same the construction disclosed in the Barney ap phca'tionaforesaid, said dogs co-opcrating mentarily shown in Fig. 1, said wheelbeing connected with the carriage as in the Pvmith It will be understoodthat when one of the type bars is actuated to print, its constrokeContact with the universal bar 10. moving lt rearward and swinging theoscilstufd 3% to moverearward about-the axis :nt of t e ed throu Q1 thelug 15 The screw holds from turning on the Y By: loosenin or out bymeans of a tool applt' mac, 40 on its shaft 11 thereby prothe' push linkor connector 37 engages.

tion with a normal position against the usual stop by are escapementdogs 55 and'ofipreferahly of with an escapenient wheel 57 which is frag-PremierNo. 60 machine. l

taet fa'ce 2 will towards the end of the lator 17 18 on its pivotalaxis, causing the 19 of the oscillator. This move stud will betransmitted tl1fOL1 i1 the linl 37 to the stud 39 at the lower end offile arm i-O thus rocking the shaft 1-1 and actuating the dog rocker,swinging the arm 45 thereof forward until its screw contacts with thestop 53. The parts at this time will be in the position illustrated inOn releasing the printing l the parts will be restored to normalposition; the spring 24 assisting to restore: the oscillator and thestop lug 53 on the bracket 13 universal bar, the dog rocker beingrestored by its spring 5%. t will be observed tl at with the parts inlower case and normally related as shown by full lines in Fig. 1, thelink or connector 37 is inclined upward from the rear towards thefrontat an angle to the horizontal. When the shift key is actuated forupper case, the segment a and shift frame 5 together with the type bars,universal bar frame 10, 15 and oscillator 17, 18, will be moved bodilydownward to upper case position. As the stud 34 shifts downward, it willswing the link 3'? downward about the stud 39 as a center, said stud notbeing affected by the shaft. The shifted position of the link isillustrated in dotted lines in Fig. l, the link being swung to an anglebelow the horizontal corresponding with that from which it started abovethe horizontal. My improved construction affords means for adjusting theparts with great nicety so that this angular swing from above to belowthe'horizontal may be accurately obtained. It will be apparent that ifthe stud 3a is too high it may readily be lowered and reset by looseningthe clamping screw 35 and swinging the plate 31 downward on its pivot 30to a suliicient extent and then reclamping. ()n the other hand if thestud is too low, it may be reset higher by swinging the plate upward andtightening the screw. Also it will be seen that the let-off of theescapement may be accurately adjusted by varying the setting of the arm40, 40 and thus changing the relationship between the two studs 3a and39, which are connected by the link 37, the timing depending upon therelationship of the motion transmitting device or stud 3a to the stud 39or device to which motion is transmitted.

It will be observed that by my present invention there is provided adriving member, namely, the oscillator 17, 18, a driven member, namely,the dog rocker element comprising the rocker proper and the part 4.0,and a link, as 37, directly connecting the driving and driven members,which members are relatively shiftable as when the case shiftingoperation takes place, combined with adjustable means for insuring asubstantially uniform transference of motion through the link in bothcase shift positions; and that in the present instance the meansaforesaid comprises the adjustable plate or link carrier 31 and meansfor clampingthe same in different set positions.

Various changes maybe. made without departing from my invention.

hat I claim as new and desire to secure by Letters Patent is 7 1. In atypewriting machine, the combination of a shiftable universal bar, a dogcarrier independent of case shiftin ove A l :3 o ments, connectionsbetween universal bar and said dog carrier comprising a link, means forvarying the points of connection of'said link with its associate parts,said means comprising a pivoted plate, and meansforclamping said platein invariable positions.

2. In a typewriting machine, tion of a shiftable universal bar, a dogcarrier, independent of case shifting movements, c nnections betweensaid universal bar and saic dog carrier comprising a link, means forvarying the points of connection of said link with its associate parts,said means comprising a pivoted plate, and means for clamping said platein invariable positions, said'plate and the end of the link connected toit participating in the shifting movements of the universal bar.

3. In a typewriting machine, the combination with a platen and a typebar segment relatively shiftable to change case, of a universal barshiftable during the case shifting operation, a dog carrier independentof said case shifting operation, an oscillator supporting said universalbar and participating in case shifting movements, a link connecting saidoscillator with said dog carrier, and adjustable means for insuringuniform action of said link in both case shift positions.

l. In a typewriting machine, the combination with a platen and a typebar segment relatively shiftable to change case, of a universal bar shitable during the case shifting operation, a dog carrier independent ofsaid case shifting operation, an oscillator supporting said-universalbar and participating in case snif 'ng movements, a-partrigid with saiddog carrier, a link pivoted at one end to said oscillator and at theopposite end to said part, one end of said link shifting during the caseshifting movement, and means for varying the normal position of saidlink so as to vary also its position at the end of the caseshiftingmovement.

5. In a typewriting machine, the combina tion of a platen, a type barsegment shiftable to chang case, an oscillator shiftable with saidsegment, a universal bar supported by said segment and by saidoscillator and shiftable therewith, said universal bar being operativeby the type bars of the machine and being adapted to actuate saidoscillator, a dog rocker, a part rigid therewith, a link pivotallyconnected to said part at one end, a link ca rier with which theopposite end of said link is pivotally connected, and means for variablysecuring said link carrier in rigid relationship with said oscillator.

6. In a typewriting machine, the combination of a universal bar, a dogcarrier, an oscillator to which said universal bar is connected, a studadjustably supported on said oscillator, and a link engaging with saidstud and connected. to said deg carrier,

the combina- 7. In a typewriting machine, the combinacillator to whichsaid universal bar is con nected, a plate pivoted on said oscillator, a

device carried by said plate, means for at fording adjustment 01 saidplate, and a link connected both to said device and to said dog carrier.

8. In a typewriting machine, the combination of a universal bar, a dogcarrier, an oscillator to which said universal bar is connected, a plateloosely pivoted to said oscillator, an engaging device carried by saidalate, a clamping screw for variably clamping said plate to saidoscillator, and a link engaging with said device and connect d to saiddog carrier. 7

9. In a typeivriting machine, the combination of a curved universal bar,a type bar directly operating said universal bar, a pivoted oscillatorby which said universal bar is: supported, a slotted plate looselypivoted to said oscillator, a stud on said plate, a clamping screwengaging the slot in said plate, a dog carrier, and a link pivoting onsaid stud and connected to said dog carrier.

10. In a typeivriting machine, the combination of a universal bar, arock shaft, a dog carrier secured to said rock shaft,an arm looselypivoted on said rocl; shaft, means "for adjustably securing said arm infixed relationship with said dog car i r, and connections between saiduniversal bar and said arm; 7 11. In a typewriting machine, thecombination of a universal bar, a rock shaft, a dog carrier secured tosaid rock shaft, an arm loosely pivoted on said rock shaft, means foradjustably securing said arm in fixed relations 1) with said do carriera studl a a and a link having its ends engaging said stud 12. In atypeivriting machine, the combi,'

nation of a universal bar; a rock shaft; a dog carrier secured to saidrock shaft; an arm pivotally mounted on said rock shaft; means foradjustably securing said arm in fixed relationship with said dogcarrier, said means comprising a nut threaded into said a1 a and adaptedto abut against a part of said dog carrier, and a screw passing looselythrough said nut and into said dog carrier for holding said nut in linedposition; and connections between said universal bar and said arm.

1%. In a typevvriting machine, the combination of a vertically disposedcurved universal bar adapted to be operatedv directly by the type barsof th machine, a pivotally supported oscillator to wl ic-h saiduniversal bar is pivotally connected, a'linl: extending rearward fromthe oscillator near its midjd-le, a rock shaft, a dog rocker detachablysecured to said rock shaft, an arm supported on said rock shaft at oneside of said dog rocker, and an engaging device cooperating With saidlink, said engaging device being carried by said arm and extendinginward beneath said dog rocker.

Signed at Syracuse, in the county of On ondaga, and State of New York,this 4 day of Sept, A. D. 1923.

Josnrn B. HOLDEN,

